GM1 to AMC1 ATS.TR.155(c)(3) ATS surveillance services

VECTORING INSTRUCTIONS IN AIR TRAFFIC CONTROL SERVICE PROVISION — GENERAL

(a)Vectoring is achieved by issuing to the pilot specific headings which will enable the aircraft to maintain the desired track.

(b)Whenever practicable, air traffic controllers should vector aircraft along tracks on which the pilot can monitor the aircraft position with reference to pilot-interpreted navigation aids; this will minimise the amount of navigational assistance required and alleviate the consequences resulting from an ATS surveillance system failure.

(c)Air traffic controllers should exercise caution when vectoring VFR flights so as to ensure that the aircraft concerned does not inadvertently enter instrument meteorological conditions (IMC).